Device for indicating spring pressure upon spinning-machine rollers



A June' 16, 1925.

w. J. FOURACRE' ET AL DEVICE FOR INDICATING SPRING PRESSURE UPONSPINNING MACHINE ROLLERS Filed Aug. 29, 1924 2 Sheets-Sheet 1 Junel6,1925- w. J" FOURACRE ET AL DEVICE FQR INDICATING SPRING -PRESSURE UPONSEiINNING MACHINE ROLLERS Filed Aug. 29-, 124 2 sheets-sheet 2 lnuenforsIn 7W 1, Mm,- a n- Patented June 16, 1925.

Parentoasis E"- WILLIAM JAMES rouasoaniann ALLAN FOURACRE, on HABDEN,NEAR BINGLEY,

ENGLAND.

DEVICE Foa INijICAiTING 'sPnING 'ranssna'n" UPON SPINNING-MACHINEao'L'LEns.

Applicationfiled AllgliStZQ, 1924. SeriaPNo'. 734,915.

1 0 all whom it may conoernifl Be it knowntliatwe, VVILLIAM JAMESFoomcnn and ALLAN FOURACRE, subjects Spinning-Machine Rollers; of whichthe. following description, haVIHgTGfEIQIJCEtO the accompanying sheetsof drawings, is a specification? In connection wlth certalnrollerslIPSPlIF ning machines used in the" production "of yarns or threadsfoffibrous 'substances' the pressure ofone-rollr against theot'her 'isbrought about by an adjustable spring and since a-considerable number ofsaid pairs of rollers are made useof in-each machineit" is of importancethat the pressure exerted by thespring ineachcaseshould' be eventhroughout the who'leseries otherwise the gripping actions of onepa'inofrollers are different to thoseof another pair an'cl bring' aboutundesirable"results. The springs made use of are of the opensp1ral1typeand"are screwed dowir by operating"screws. astheattendantfrom time to timethinks fitand' as hitherto no indicationhasbeen provided forshowing the positions in which the springs areadjusted, the attendantha's had to adjust said springs empirically thussome of the springs aremade to eXe'rt extreme pressure while othersprings are not nearly so much under compression- Ourinventioii consistsin the production of indicating devices whereby the amountofcompressionthat the springs have undergone or to which they are regulated, may beindicated so that all the springs may be compressed to the same extentwhich is shown by the devices we employ, thus obtaining as nearly aspossible, uniformity of pressure throughout the whole arrangementwhether said springs are for the drawing rollers of spinning or likemachines or for other purposes in connection with the same type ofapparatus.

In order that our said invention may be readily understood we havehereunto appended sheets of drawings illustrative thereofto which byfigures and letters reference is made in the following description.

Fig. 1 is an end View of the shafts and of two rollers (which have to beforced into contact with each other in known manner) lustrates" a Fig.1

showing the application theretoof our inr' proved devices.

F ig.2 is-a similar view to Fig. 1 but ilmodification hereinafterexplained.

showsthe parts illustrated by Fig. 2.

Fig.- 5 is aside elevation of our improved devices drawn to an enlargedscale.

Fig; 6 is anelevation of the'parts'shown" by -Fig; 5 as seen inadlrectionlooklng from leftto right of said figure.

Flg. 7 is an elevationof parts shownby is a View of the parts shown by.as seen in the direction looking from right to left of sai'd figure.

Fig. 4 isa similar 'view'to'Fig. 3 but Figs. 2 andd respectively thesame being drawn to an enlarged scale.

Fig; 8 'is a sectional elevation of our iniproved parts of the modifiedfornrshown by Figs; 2, 4 and 7.

In the drawings" annexed hereto the rollers 3 and 4 are the ordinary"delivery rollersof a"spinning'machine. The series oflower rollers 3 arefixed upon a hori Zontalshaft 3 whichextends lengthwise the machine and1S rotated ln'the *usualmanner while theupper series of rolle'rs'earearranged in pairs as shown byFigs. 3 andl so that the shafts 4 ofsaid 4 may be engaged with by a hook 14k which slides over the screw 5having a hook5? at its lower endi This hook o -engages with a bracket 15fixed on the framework of the spinning machine so that the upper rollers4 may be forced into contact with the lower rollers 3. The saidarrangement of devices is of the ordinary character used in all worstedand like spinning machines.

In carrying our invention into efiect we arrange the pressure springs 2for the series of drawing and delivery rollers 3 and 4 of a spinningframe to be all of the same strength and length in order that whenmounted upon their respective screws 5 any alteration in the compressionof any of the said springs 2 may be shown by an indicator. Thisindicator according to one arrangement consists of a bent arm 6 which ismounted upon the screw 5 prior to the placing thereon of the spring 2and which is arranged to have graduations a, see Figs. 3 to 6 (which maybe numbered if desired) in order to show the space or distance throughwhich any spring 2 may have been pairs of rollers compressed by itsadjusting nut 7 acting upon it when screwed down over its screw 5.

This indication is given by the nut 7 compressing the spring 2 and atthe same time forcing an arm 8 down over the indicating plate 6 so thatthe space that it has been forced over said indicating plate 6 is shownby the markings a formed on said plate. The arm 8 is slotted to takeover the indicating plate 6 so that it is thereby kept in properrelationship therewith.

As an alternative formation to the plate 6 and arm 8, we have a hollowsleeve 6" and bush 8 taking into same as shown by Figs. 2, 4, 7 and 8.

The actions of these latter parts are identical with those of the formerexcept that the markings a are now shown at a on the bush 8 instead ofbeing shown on the part 6 in the other arrangement as it is obvious thatthe same indicating feature is secured by screwing down the nut 7 overthe screw 5 to cause the bush 8- to descend into the sleeve 6 so thatmarkings a on the outside thereof will indicate how far said bush hasdescended into the sleeve thus the amount that each spring 2 has beencompressed is shown clearly by the markings a on the bush 8 the same asthe compression of the spring is shown by the markings a on the plate 6.

Such being the nature and object of our said invention, what we claimis 1. In a spinning machine, the combination of a shaft, a rollersupported by the shaft to rotate about the axis thereof, a second rollerarranged to rotate in peripheral contact with the first said roller, arelatively stationary member having a threaded stem extending across theaxis of the first said roller, a slide fitted on said stem and having alateral projection extending across and bearing against the shaftsupporting the first said roller, a coiled spring surrounding the stemand tending to move the slide to maintain contact between the rollers, anut mounted on the stem and movable thereon to vary the strength of thespring, and means for indicating the location of the nut on the stem inany adjusted posit-ion.

2. In a spinning machine, the combination of a shaft, a roller supportedby the shaft to rotate about the axis thereof, a second roller arrangedto rotate in peripheral contact with the first said roller below thehorizontal plane of the shaft, a relatively stationary member having athreaded stein extending across the axis of the first said roller, aslide fitted on said stem and having a lateral projection extending overand bearing on the shaft, a coiled spring surrounding the threaded stemabove and bearing on said slide, a nut engaging the threaded stem andmovable thereon to vary the compression of the spring, and means forindicating the location of the nut on the stem in any adjusted position.

3. In a spinning machine, the combination of two shafts, a rollersupported by each shaft to rotate about the axis thereof, said rollersbeing in peripheral contact, a relatively stationary member extendingacross the axis of one of said rollers, a slide mounted on said memberand engaging one of said shafts, a sleeve surrounding said member beyondthe slide, a coiled spring within the sleeve acting to move the slide tomaintain contact between the rollers, a nut engaged with the stem, and amember interposed between th nut and spring and telescopically engagingthe sleeve, one of said telescopic elements being provided withgraduations cooperating with the other said element to indicate theextent of compression of the spring.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

lVILLlAM JAMES FOURACHE ALLAN FOURACRE. lVitnesses ERNEST HEY, N.BUCKLEY.

